84792817 has 4 divisors (see below), whose sum is σ = 84813120. Its totient is φ = 84772516.

The previous prime is 84792809. The next prime is 84792857. The reversal of 84792817 is 71829748.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 84792817 - 2³ = 84792809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84792857) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1333 + ... + 13090.

It is an arithmetic number, because the mean of its divisors is an integer number (21203280).

Almost surely, 2^84792817 is an apocalyptic number.

It is an amenable number.

84792817 is a deficient number, since it is larger than the sum of its proper divisors (20303).

84792817 is a wasteful number, since it uses less digits than its factorization.

84792817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20302.

The product of its digits is 225792, while the sum is 46.

The square root of 84792817 is about 9208.3015263402. The cubic root of 84792817 is about 439.3254419235.

The spelling of 84792817 in words is "eighty-four million, seven hundred ninety-two thousand, eight hundred seventeen".